CN113965745A - System and method for automatic high-speed monitoring of rail turnout - Google Patents
System and method for automatic high-speed monitoring of rail turnout Download PDFInfo
- Publication number
- CN113965745A CN113965745A CN202111372450.XA CN202111372450A CN113965745A CN 113965745 A CN113965745 A CN 113965745A CN 202111372450 A CN202111372450 A CN 202111372450A CN 113965745 A CN113965745 A CN 113965745A
- Authority
- CN
- China
- Prior art keywords
- speed camera
- light source
- trigger
- speed
- rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
The invention discloses a system and a method for automatic high-speed monitoring of a rail turnout, which comprises the steps of predicting the arrival of a train in advance through a laser ranging trigger or a vibration trigger, generating a trigger signal and sending the trigger signal to a high-speed camera, feeding the trigger signal back to an industrial personal computer, analyzing the signal by the industrial personal computer, generating a control signal, transmitting the control signal to the high-speed camera, enabling the high-speed camera to enter a starting mode, and acquiring a rail turnout image. The method has the advantages that the arrival of a train is predicted in advance through the trigger, the trigger signal is generated to control the high-speed camera to start to acquire the rail turnout image before the arrival of the train, the automatic control of the starting of the high-speed camera is realized, meanwhile, the rail turnout and the rail gap are clearly observed through the specific on-site fixed angle and distance cooperative intelligent light supplementing equipment, the acquired image comprises the whole conversion process of the rail turnout, and the fault detection and prevention of the turnout conversion equipment can be realized based on the action analysis of the turnout conversion equipment conversion process.
Description
Technical Field
The invention belongs to the technical field of rail monitoring, and particularly relates to a system and a method for automatically monitoring a rail turnout at a high speed.
Background
The railway is a main junction of the current traffic, the working environment of the turnout conversion equipment in the rail is harsher than that of other stable equipment, the turnout conversion equipment is not only influenced by natural environment such as rain, snow, wind and sand, but also influenced by the working stability of the turnout conversion equipment due to frequent rail replacement under the working state of the turnout conversion equipment, the fault rate of the turnout conversion equipment is higher due to double influences, data statistics shows that the fault rate of the turnout conversion equipment is about more than 40% in all electromagnetic signal equipment in the rail, the slow playback and monitoring after high-frame-rate mining in the turnout conversion process are important supports for fault prevention and equipment optimization along with the continuous development of railway technology and the continuous improvement of vehicle speed, but the existing sensor type monitoring system cannot meet the requirements for early prevention and action analysis of the turnout conversion equipment fault.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a system and a method for automatically monitoring a rail turnout at a high speed.
To achieve the above object, a first aspect of the embodiments of the present invention provides a system for automatic high-speed monitoring of rail switches, the system comprising:
the trigger comprises a laser ranging trigger and a vibration trigger, is used for generating a corresponding trigger signal based on the laser ranging information and the vibration information, and sends the trigger signal to the high-speed camera;
the high-speed camera is used for receiving the trigger signal and sending the trigger signal to the industrial personal computer, entering a starting mode based on a control signal transmitted by the industrial personal computer and acquiring an image of the rail turnout;
and the industrial personal computer is used for analyzing the trigger signal, generating a control signal, controlling the working mode of the high-speed camera and receiving the rail turnout image acquired by the high-speed camera.
According to the scheme, the laser ranging trigger is provided with two groups, the two groups of laser ranging triggers are fixedly arranged on two sides of the inside of the rail respectively, the height of each laser ranging trigger is larger than the height of the rail, the train operation is not influenced, the vibration trigger is attached to the inner side surface of the rail, the laser ranging triggers and the vibration triggers are connected in parallel and electrically connected with the high-speed camera, and when any one of the laser ranging triggers and the vibration triggers is triggered, a trigger signal is generated and transmitted to the high-speed camera.
As the further optimization of above-mentioned scheme, the high-speed camera is provided with four altogether, and every high-speed camera all sets up in same mounting bracket with an infrared light source is fixed, and four high-speed cameras set up both sides around the rail switch respectively, and every side sets up two high-speed cameras, infrared light source is 30 with the rail switch and sets up, and the distance is 800mm, and infrared light source adopts 850nm wave band light, and every infrared light source includes 4 lamp pearls and a radiator, the inside fixed mounting of high-speed camera has 850 nm's light filter for receive infrared light source's light wave.
As a further optimization of the scheme, each group of two infrared light sources are connected to the same light source controller, the light source controller is connected with the high-speed camera and can receive control signals transmitted by the high-speed camera, and the light source controller is further connected with a light intensity sensor for collecting illumination intensity and a data transmission module for communicating with the industrial personal computer.
As a further optimization of the scheme, the industrial personal computer comprises 4 ten-gigabit network card interfaces and at least 6-core CPUs, is electrically connected with the four high-speed cameras at the same time and is in communication connection with the light source controller, and is used for controlling the working mode of the high-speed cameras based on the trigger signals sent by the high-speed cameras and automatically adjusting the illumination intensity of the infrared light source based on the illumination intensity collected by the light source controller.
As a further optimization of the above scheme, the automatically adjusting the illumination intensity of the infrared light source includes:
acquiring two illumination intensities acquired by the two groups of light source controllers, calculating the average value of the two illumination intensities as the ambient illumination intensity of the rail turnout, and transmitting the ambient illumination intensity to the industrial personal computer through the data transmission module;
the industrial personal computer calculates the required illumination intensity of the infrared light source based on the ambient illumination intensity, and the sum of the illumination intensity of the infrared light source and the ambient illumination intensity is always a fixed value;
the industrial computer sends required infrared source illumination intensity to the illumination intensity of light source controller adjustment infrared source, realizes automatically regulated infrared source's illumination intensity to realize intelligent light filling function.
A second aspect of an embodiment of the present invention provides a method for automatic high speed monitoring of rail switches, the method comprising:
generating a corresponding trigger signal by adopting a trigger based on the laser ranging information and the vibration information, and transmitting the trigger signal to a signal input end of the high-speed camera;
the high-speed camera receives the trigger signal and transmits the trigger signal to the industrial personal computer;
the industrial personal computer analyzes the trigger signal to generate a control signal, and an infrared light source and a high-speed camera are started to acquire rail turnout images through the control signal.
As a further optimization of the above scheme, the industrial personal computer receives the trigger signal transmitted by the high-speed camera, reads the on/off state of the trigger signal through a built-in signal analysis module, generates a start control signal when the read trigger signal is in the on state, transmits the start control signal to the high-speed camera, and starts the high-speed camera and the infrared light source.
As a further optimization of the above scheme, the start control signal is transmitted to the high-speed camera, a voltage difference between a Trig + terminal and a Trig-terminal of the high-speed camera changes, when the voltage difference exceeds a threshold voltage, the high-speed camera increases a voltage at an input terminal of the light source controller, when the voltage difference between the input terminal and an output terminal of the light source controller exceeds the threshold voltage, the infrared light source is started, after waiting for a preset delay, the high-speed camera enters a start mode, wherein an optical coupler is arranged inside the high-speed camera.
As a further optimization of the above solution, the method further comprises: presetting the image acquisition time and the camera starting interval time,
the method comprises the steps that the image acquisition time is the time for acquiring images after the high-speed camera is started, when the time for acquiring the images by the high-speed camera reaches the preset image acquisition time, an industrial personal computer generates a standby control signal, transmits the standby control signal to the high-speed camera, turns off an infrared power supply and enables the high-speed camera to enter a standby mode;
the camera starting interval time is the interval duration between two adjacent high-speed cameras, and after the high-speed cameras enter the standby mode from the starting mode, the high-speed cameras cannot be restarted within the preset camera starting interval time.
The system and the method for automatically monitoring the rail turnout at high speed have the following beneficial effects:
1. the invention generates a trigger signal through the laser ranging trigger and the vibration trigger, analyzes the trigger signal through the industrial personal computer, generates a control signal, transmits the control signal to the high-speed camera, controls the starting of the high-speed camera, realizes the automatic starting of the monitoring system, simultaneously can start the high-speed camera to acquire images in advance before the arrival of the train through the trigger, and can realize the fault detection and prevention of the turnout conversion equipment based on the action analysis of the turnout conversion equipment conversion process.
2. The invention simultaneously receives rail turnout images acquired by the high-speed camera through the industrial personal computer, the industrial personal computer is provided with 4 gigabit network card interfaces, high-bandwidth transmission of data is realized, the number of the CPU cores of the industrial personal computer is at least 6, the working frequency is not lower than 4GHZ, and the phenomenon of frame loss in the image transmission process is avoided.
3. According to the invention, the time for the high-speed camera to acquire the image is set through the preset image acquisition time and the camera starting interval time, when the preset image acquisition time is reached, the high-speed camera stops acquiring the image and enters the standby mode, and the high-speed camera cannot be restarted within the preset camera starting interval time after entering the standby mode, so that the image data acquired by the camera cannot be overlarge, meanwhile, the phenomenon that the camera mistakenly touches and acquires useless data is avoided, the data storage pressure of the industrial personal computer is reduced, and the data processing in the later period is facilitated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an overall block diagram of a system and method for automatic high speed monitoring of rail switches in accordance with the present invention;
FIG. 2 is a schematic connection diagram of a system for automatic high speed monitoring of rail switches in accordance with the present invention;
fig. 3 is an overall flow chart of a system and method for automatic high speed monitoring of rail switches in accordance with the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
The embodiment of the invention provides a system for automatically monitoring a rail turnout at a high speed, which comprises:
the trigger comprises a laser ranging trigger and a vibration trigger, is used for generating a corresponding trigger signal based on the laser ranging information and the vibration information, and sends the trigger signal to the high-speed camera;
the high-speed camera is used for receiving the trigger signal and sending the trigger signal to the industrial personal computer, entering a starting mode based on a control signal transmitted by the industrial personal computer and acquiring an image of the rail turnout;
and the industrial personal computer is used for analyzing the trigger signal, generating a control signal, controlling the working mode of the high-speed camera and receiving the rail turnout image acquired by the high-speed camera.
Referring to fig. 1, in this embodiment, the triggers include a laser ranging trigger and a vibration trigger, the two triggers are disposed on the rail, the laser ranging trigger can obtain the position of the train through laser ranging, and the vibration trigger predicts the position of the train according to the vibration of the rail. The high-speed camera is in a standby state, when a train is coming, the laser ranging trigger or the vibration trigger can be predicted in advance and generates a trigger signal to be sent to the high-speed camera, the high-speed camera can feed the trigger signal back to the industrial personal computer after receiving the trigger signal, the industrial personal computer analyzes the signal to generate a control signal, and the control signal is returned to the high-speed camera, so that a working model of the high-speed camera is controlled, the high-speed camera enters a starting mode, and a rail turnout image is collected. The method has the advantages that the arrival of a train is predicted in advance through the trigger, the trigger signal is generated, the industrial personal computer analyzes the trigger signal to generate the control signal to control the high-speed camera to start to acquire the rail turnout image before the arrival of the train, the automatic control of the starting of the high-speed camera is realized, the acquired image comprises the whole conversion process of the rail turnout, and the fault detection and prevention of the turnout conversion equipment can be realized based on the action analysis of the conversion process of the turnout conversion equipment.
Based on the system, the two groups of laser ranging triggers are respectively fixedly arranged on two sides in the rail, the height of each laser ranging trigger is larger than the height of the rail, the train operation is not influenced, the vibration triggers are attached to the inner side face of the rail, the laser ranging triggers and the vibration triggers are connected in parallel and electrically connected with the high-speed camera, and when any one of the laser ranging triggers and the vibration triggers is triggered, a trigger signal is generated and transmitted to the high-speed camera.
Referring to fig. 2, specifically, two groups of laser ranging triggers are arranged and respectively fixedly installed on two sides of the inside of a rail, the distance between each group of laser ranging triggers and the inside of the rail is preferably 200mm-250mm, the height of each group of laser ranging triggers is greater than the high speed of the rail, but the height of a camera does not affect the normal operation of a train, the vibration trigger is fixedly attached to the inner side surface of the rail, the two triggers are connected in parallel and electrically connected with a high-speed camera, when any one of the two triggers is triggered, a trigger signal can be immediately generated and transmitted to the high-speed camera through a circuit. The arrival of the train can be predicted in advance through the triggers, and the two triggers are arranged on the track and are connected in parallel, so that the sensitivity of the triggers is ensured, meanwhile, the running of the train is not interfered, and the running of the whole system is more stable.
Based on above-mentioned system, high-speed camera is provided with four altogether, and every high-speed camera all sets up in same mounting bracket with an infrared light source is fixed, and four high-speed cameras set up both sides around the rail switch respectively, and every side sets up two high-speed cameras, infrared light source is 30 settings with the rail switch, and the distance is 800mm, and infrared light source adopts 850nm wave band light, and every infrared light source includes 4 lamp pearls and a radiator, the inside fixed mounting of high-speed camera has 850 nm's light filter for receive infrared light source's light wave.
Referring to fig. 2, it should be noted that, each high-speed camera and one infrared light source are fixedly arranged in the same mounting rack, wherein the distance between the camera and the infrared light source is preferably 30mm-40mm, the high-speed camera and the infrared light source are fixedly arranged at two sides of the rail turnout, two high-speed cameras are arranged at each side, the two high-speed cameras positioned at the same side of the rail turnout are divided into the same group, each group of high-speed cameras are connected to the same camera power supply together, concretely, the two groups of high-speed cameras are respectively arranged at the front and the back of the rail turnout, relative to 180-degree observation, the infrared light source and the turnout area to be observed are arranged at 30 degrees, the distance is preferably 800mm, the infrared light source and the high-speed camera are fixed in this way, the infrared light source can be turned on at the bottom of the train when the train runs, the observed rail turnout conversion process is most clear, and the collected rail turnout image can clearly observe the joint gap between the switch rail and the rail.
The utility model discloses a rail switch, including high-speed camera, infrared source, the inside fixed mounting of high-speed camera has 850 mm's light filter, when the train arrives, infrared source opens in the train bottom, 4 light sources of 850mm wave band are sent simultaneously to the lamp pearl, can eliminate the shadow of rail switch, make the luminance of rail switch more even, the inside fixed mounting of high-speed camera has 850mm light filter, only receive the light wave that sends of infrared source, the influence of natural light source to high-speed camera collection image has been reduced, the overexposure problem among the image acquisition process has been solved, can make the rail switch image of collection more clear.
Based on the system, the two infrared light sources of each group are connected to the same light source controller together, the light source controller is connected with the high-speed camera and can receive a control signal transmitted by the high-speed camera, and the light source controller is further connected with a light intensity sensor for collecting illumination intensity and a data transmission module for communicating with the industrial personal computer.
Referring to fig. 1, it should be noted that two infrared light sources of each group of high-speed cameras are connected to a group of light source together for control, two groups of light source controllers are arranged, each group of light source controllers is connected with a power supply, the high-speed cameras receive a trigger signal and then transmit the signal to an industrial personal computer, receive a control signal fed back by the industrial personal computer, the high-speed cameras transmit the control signal to the light source controllers, and the light source controllers control the on-off of the power supplies of the infrared light sources based on the control signal.
Furthermore, the light source controller is further provided with a light intensity sensor and a data transmission module, the light source controller obtains the illumination intensity of the environment in real time through the light intensity sensor, the obtained environment illumination intensity is transmitted to the industrial personal computer through the data transmission module, and the industrial personal computer controls the illumination intensity to adjust the illumination intensity of the infrared light source through the data transmission module after receiving the environment illumination intensity.
Based on the system, the industrial personal computer comprises 4 gigabit network card interfaces and at least 6 cores of CPU, is electrically connected with the four high-speed cameras at the same time, is in communication connection with the light source controller, and is used for controlling the working mode of the high-speed cameras based on the trigger signals sent by the high-speed cameras and automatically adjusting the illumination intensity of the infrared light source based on the illumination intensity collected by the light source controller.
In this embodiment, the industrial computer is used for controlling the mode of high-speed camera, receives the rail switch image that high-speed camera gathered, adjusts infrared light source's illumination intensity. The acquisition frequency of the adopted high-speed cameras is not lower than 50fps after the high-speed cameras are started, the size S of the rail turnout images acquired by the four high-speed cameras in one second is 1.98MB 50 MB 396MB, the data transmission rate of the industrial personal computer is at least 3168Mpbs because the industrial personal computer needs to simultaneously receive the rail turnout images acquired by the four high-speed cameras, and 4 gigabit network card interfaces need to be arranged on the industrial personal computer, are respectively connected with the four high-speed cameras and are used for receiving the rail turnout images acquired by the high-speed cameras. Meanwhile, the problem of frame loss of the industrial personal computer in the process of receiving the rail turnout image is avoided, the number of the CPU cores of the industrial personal computer is at least 6, and the working frequency is not lower than 4 GHZ.
Based on above-mentioned system, above-mentioned automatically regulated infrared light source's illumination intensity includes:
acquiring two illumination intensities acquired by the two groups of light source controllers, calculating the average value of the two illumination intensities as the ambient illumination intensity of the rail turnout, and transmitting the ambient illumination intensity to the industrial personal computer through the data transmission module;
the industrial personal computer calculates the required illumination intensity of the infrared light source based on the ambient illumination intensity, and the sum of the illumination intensity of the infrared light source and the ambient illumination intensity is always a fixed value;
the industrial computer sends required infrared source illumination intensity to the illumination intensity of light source controller adjustment infrared source, realizes automatically regulated infrared source's illumination intensity to realize intelligent light filling function.
It should be noted that, when the light source controller opens the infrared light source, the light source controller can acquire the ambient light intensity of the rail turnout in real time through the light intensity sensor, and transmit the acquired ambient light intensity data to the industrial personal computer through the data transmission module, after the industrial personal computer receives the ambient light intensity data, the industrial personal computer can calculate the light intensity provided by the required infrared light source according to the data, and transmit the light intensity back to the light source controller through the data transmission module, the intensity of the infrared light source is adjusted in real time through the light source controller, the final superimposed light intensity is ensured to be a fixed value, wherein the light source intensity of the environment is the average value of the ambient light intensity acquired by the light intensity sensors on the two light source controllers. By the method, the intensity of the infrared light source can be intelligently adjusted according to the illumination intensity in the environment, the final imaging is not influenced by the real-time environment illumination, the condition that the integral gray scale of a shot picture is not uniform or the accidental illumination intensity is insufficient due to the change of the ambient illumination front degree is avoided, and the quality of the collected image is improved.
The embodiment of the invention also provides a method for automatically monitoring the rail turnout at high speed, which comprises the following steps:
generating a corresponding trigger signal by adopting a trigger based on the laser ranging information and the vibration information, and transmitting the trigger signal to a signal input end of the high-speed camera;
the high-speed camera receives the trigger signal and transmits the trigger signal to the industrial personal computer;
the industrial personal computer analyzes the trigger signal to generate a control signal, and an infrared light source and a high-speed camera are started to acquire rail turnout images through the control signal.
Based on the method, the industrial personal computer receives the trigger signal transmitted by the high-speed camera, reads the on/off state in the trigger signal through the built-in signal analysis module, generates a starting control signal when the read trigger signal is in the on state, transmits the starting control signal, and then starts the high-speed camera and the infrared light source.
Referring to fig. 3, in this embodiment, after receiving a trigger signal, the high-speed camera transmits the trigger signal to an industrial personal computer, after receiving the trigger signal, the industrial personal computer reads a control signal including an on/off state in the trigger signal through a built-in signal analysis module, then determines whether the state of the read control signal is "on", and if the state of the control signal is "on", generates a start control signal and transmits the start control signal back to the high-speed camera, after receiving the start control signal, the high-speed camera enters a start mode after a preset delay, transmits the start control signal to a light source controller, and turns on an infrared light source for illumination by the light source controller.
Based on the method, the starting control signal is transmitted to the high-speed camera, the voltage difference between the Trig + end and the Trig-end of the high-speed camera is changed, when the voltage difference exceeds the threshold voltage, the high-speed camera increases the voltage of the input end of the light source controller, when the voltage difference between the input end and the output end of the light source controller exceeds the threshold voltage, the infrared light source is started, after the preset delay is waited, the high-speed camera enters the starting mode, and the optical coupler isolation is arranged inside the high-speed camera.
Referring to fig. 3, in this embodiment, the start control signal is a level signal, when the start control signal is transmitted to the high-speed camera, the voltage at the Trig + terminal of the high-speed camera increases to form a voltage difference with the voltage at the Trig-terminal, and when the voltage difference exceeds the threshold voltage difference, the high-speed camera may synchronously increase the voltage at the input terminal of the light source controller connected to the high-speed camera, so that the voltage difference is formed between the input terminal of the light source controller and the output terminal of the light source controller, when the voltage difference between the input terminal of the light source controller and the output terminal of the light source controller exceeds the threshold voltage, the light source controller may start the two infrared light sources connected to the light source controller, and after waiting for a preset delay of 50ms, the high-speed camera may enter the start mode, and acquire the threshold voltage difference of the rail switch image at a frequency not lower than 50fps, and preferably 5V.
Further, the inside of high-speed camera is provided with the opto-coupler and keeps apart, can arouse the level change of the outside trigger end Trig + of high-speed camera and Trig-behind the start control signal entering high-speed camera, form level signal, the start of this level signal control camera is kept apart through discerning to the inside opto-coupler of high-speed camera, the start delay accessible opto-coupler isolation circuit of high-speed camera sets up, the identifiable rising edge of the inside opto-coupler of high-speed camera isolation in this embodiment, the falling edge, the both sides, high level, multiple signals such as low level.
Based on the above method, the above method further comprises: presetting the image acquisition time and the camera starting interval time,
the method comprises the steps that the image acquisition time is the time for acquiring images after the high-speed camera is started, when the time for acquiring the images by the high-speed camera reaches the preset image acquisition time, an industrial personal computer generates a standby control signal, transmits the standby control signal to the high-speed camera, turns off an infrared power supply and enables the high-speed camera to enter a standby mode;
the camera starting interval time is the interval duration between two adjacent starts of the high-speed camera, and after the high-speed camera enters the standby mode from the starting mode, the high-speed camera cannot be started again within the preset camera starting interval time.
In this embodiment, after the high-speed camera enters the start mode, the high-speed camera acquires the image of the rail turnout with a frequency not lower than 50fps, until the time length of the high-speed camera acquiring the image reaches the preset image acquisition time length, the industrial control unit generates a standby control signal and transmits the standby control signal to the high-speed camera, so that the voltage difference between the Trig + end and the Trig-end of the high-speed camera is reduced, the high-speed camera also synchronously reduces the voltage at the input end of the light source controller, the infrared light source is turned off, the high-speed camera enters the standby state, the image acquisition is stopped, and the preset image acquisition time length is 10 s.
It should be noted that, in order to avoid that the train does not completely leave the rail turnout area within the preset image acquisition duration, and the high-speed camera is triggered and started immediately after being turned off, in this embodiment, the problem is solved by presetting the camera start interval time, after the high-speed camera enters the standby mode, the industrial personal computer does not generate the start control signal again within the preset camera start interval time, so as to avoid repeated triggering of the camera, and the camera start interval is preferably 3 min.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (10)
1. A system for automatic high speed monitoring of rail switches, the system comprising:
the trigger comprises a laser ranging trigger and a vibration trigger, is used for generating a corresponding trigger signal based on the laser ranging information and the vibration information, and sends the trigger signal to the high-speed camera;
the high-speed camera is used for receiving the trigger signal and sending the trigger signal to the industrial personal computer, entering a starting mode based on a control signal transmitted by the industrial personal computer and acquiring an image of the rail turnout;
and the industrial personal computer is used for analyzing the trigger signal, generating a control signal, controlling the working mode of the high-speed camera and receiving the rail turnout image acquired by the high-speed camera.
2. The system of claim 1, wherein the laser ranging trigger is provided in two groups, the two groups are respectively and fixedly arranged on two inner sides of the rail, the height of the two groups is larger than that of the rail, the train operation is not influenced, the vibration trigger is attached to the inner side surface of the rail, the laser ranging trigger and the vibration trigger are connected in parallel and electrically connected with the high-speed camera, and when any one of the laser ranging trigger and the vibration trigger is triggered, a trigger signal is generated and transmitted to the high-speed camera.
3. The system according to claim 2, wherein four high-speed cameras are arranged, each high-speed camera is fixedly arranged in the same mounting frame together with one infrared light source, the four high-speed cameras are respectively arranged on the front side and the rear side of the rail turnout, two high-speed cameras are arranged on each side, the infrared light sources and the rail turnout are arranged at 30 degrees, the distance is 800mm, the infrared light sources adopt 850nm waveband light, each infrared light source comprises 4 lamp beads and a radiator, and 850nm optical filters are fixedly arranged inside the high-speed cameras and used for receiving light waves of the infrared light sources.
4. The system of claim 3, wherein each group of two infrared light sources are connected to the same light source controller, the light source controller is connected to the high-speed camera and can receive control signals transmitted by the high-speed camera, and the light source controller is further connected to a light intensity sensor for acquiring illumination intensity and a data transmission module for communicating with the industrial personal computer.
5. The system as claimed in claim 4, wherein the industrial personal computer comprises 4 gigabit network card interfaces and at least 6 cores of CPU, is electrically connected with the four high-speed cameras at the same time, is in communication connection with the light source controller, and is used for controlling the working mode of the high-speed cameras based on the trigger signals sent by the high-speed cameras and automatically adjusting the illumination intensity of the infrared light source based on the illumination intensity collected by the light source controller.
6. The system of claim 5, wherein the automatically adjusting the illumination intensity of the infrared light source comprises:
acquiring two illumination intensities acquired by the two groups of light source controllers, calculating the average value of the two illumination intensities as the ambient illumination intensity of the rail turnout, and transmitting the ambient illumination intensity to the industrial personal computer through the data transmission module;
the industrial personal computer calculates the required illumination intensity of the infrared light source based on the ambient illumination intensity, and the sum of the illumination intensity of the infrared light source and the ambient illumination intensity is always a fixed value;
the industrial computer sends required infrared source illumination intensity to the illumination intensity of light source controller adjustment infrared source, realizes automatically regulated infrared source's illumination intensity to realize intelligent light filling function.
7. A method for automatic high speed monitoring of rail switches, the method comprising:
generating a corresponding trigger signal by adopting a trigger based on the laser ranging information and the vibration information, and transmitting the trigger signal to a signal input end of the high-speed camera;
the high-speed camera receives the trigger signal and transmits the trigger signal to the industrial personal computer;
the industrial personal computer analyzes the trigger signal to generate a control signal, and an infrared light source and a high-speed camera are started to acquire rail turnout images through the control signal.
8. The method according to claim 7, wherein the industrial personal computer receives the trigger signal transmitted by the high-speed camera, reads the on/off state of the trigger signal through a built-in signal analysis module, generates a start control signal when the read trigger signal is in the on state, and transmits the start control signal to the high-speed camera to start the high-speed camera and the infrared light source.
9. The method of claim 8, wherein the start control signal is transmitted to the high speed camera, a voltage difference between a Trig + terminal and a Trig-terminal of the high speed camera changes, the high speed camera increases a voltage at an input terminal of the light source controller when the voltage difference exceeds a threshold voltage, the infrared light source is started when the voltage difference between the input terminal and the output terminal of the light source controller exceeds the threshold voltage, and the high speed camera enters a start mode after waiting for a predetermined delay, wherein an optical coupling isolation is provided inside the high speed camera.
10. The method of claim 7, further comprising: presetting the image acquisition time and the camera starting interval time,
the method comprises the steps that the image acquisition time is the time for acquiring images after the high-speed camera is started, when the time for acquiring the images by the high-speed camera reaches the preset image acquisition time, an industrial personal computer generates a standby control signal, transmits the standby control signal to the high-speed camera, turns off an infrared power supply and enables the high-speed camera to enter a standby mode;
the camera starting interval time is the interval duration between two adjacent high-speed cameras, and after the high-speed cameras enter the standby mode from the starting mode, the high-speed cameras cannot be restarted within the preset camera starting interval time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372450.XA CN113965745A (en) | 2021-11-18 | 2021-11-18 | System and method for automatic high-speed monitoring of rail turnout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111372450.XA CN113965745A (en) | 2021-11-18 | 2021-11-18 | System and method for automatic high-speed monitoring of rail turnout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113965745A true CN113965745A (en) | 2022-01-21 |
Family
ID=79471180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111372450.XA Pending CN113965745A (en) | 2021-11-18 | 2021-11-18 | System and method for automatic high-speed monitoring of rail turnout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113965745A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107566517A (en) * | 2017-09-26 | 2018-01-09 | 南京哈卢信息科技有限公司 | Railway freight detecting system based on technology of Internet of things |
| CN108318489A (en) * | 2017-01-17 | 2018-07-24 | 南京火眼猴信息科技有限公司 | A kind of system and method for the real-time storage of Tunnel testing data |
| CN207882170U (en) * | 2018-02-28 | 2018-09-18 | 北京康拓红外技术股份有限公司 | A kind of EMU critical component installation condition image detection device |
| CN209964161U (en) * | 2019-07-11 | 2020-01-17 | 合肥富煌君达高科信息技术有限公司 | Image acquisition system based on high-speed railway |
| CN211765582U (en) * | 2020-03-06 | 2020-10-27 | 合安高铁股份有限公司 | Turnout switch point tightness detection system based on image detection technology |
| CN111942434A (en) * | 2020-06-30 | 2020-11-17 | 北京康拓红外技术股份有限公司 | Intelligent fault image detection device for key parts of railway wagon |
| US20200399836A1 (en) * | 2019-06-21 | 2020-12-24 | Harsco Technologies LLC | Systems for railroad switch position detection |
| CN212628183U (en) * | 2020-06-30 | 2021-02-26 | 北京康拓红外技术股份有限公司 | Intelligent fault image acquisition and detection device for key parts of railway wagon |
| CN113507602A (en) * | 2021-06-30 | 2021-10-15 | 同济大学 | Software and hardware synchronous control method in high-speed video measurement system |
-
2021
- 2021-11-18 CN CN202111372450.XA patent/CN113965745A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318489A (en) * | 2017-01-17 | 2018-07-24 | 南京火眼猴信息科技有限公司 | A kind of system and method for the real-time storage of Tunnel testing data |
| CN107566517A (en) * | 2017-09-26 | 2018-01-09 | 南京哈卢信息科技有限公司 | Railway freight detecting system based on technology of Internet of things |
| CN207882170U (en) * | 2018-02-28 | 2018-09-18 | 北京康拓红外技术股份有限公司 | A kind of EMU critical component installation condition image detection device |
| US20200399836A1 (en) * | 2019-06-21 | 2020-12-24 | Harsco Technologies LLC | Systems for railroad switch position detection |
| CN209964161U (en) * | 2019-07-11 | 2020-01-17 | 合肥富煌君达高科信息技术有限公司 | Image acquisition system based on high-speed railway |
| CN211765582U (en) * | 2020-03-06 | 2020-10-27 | 合安高铁股份有限公司 | Turnout switch point tightness detection system based on image detection technology |
| CN111942434A (en) * | 2020-06-30 | 2020-11-17 | 北京康拓红外技术股份有限公司 | Intelligent fault image detection device for key parts of railway wagon |
| CN212628183U (en) * | 2020-06-30 | 2021-02-26 | 北京康拓红外技术股份有限公司 | Intelligent fault image acquisition and detection device for key parts of railway wagon |
| CN113507602A (en) * | 2021-06-30 | 2021-10-15 | 同济大学 | Software and hardware synchronous control method in high-speed video measurement system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107040727B (en) | Camera exposure method and device | |
| CN102136191B (en) | Multi-scene full-function all-in-one machine capable of capturing and monitoring | |
| KR102188850B1 (en) | Black Ice Analysis System Using Wireless Communication | |
| CN108538059B (en) | Control method of electronic police light supplement system | |
| CN204377046U (en) | A kind of mobile Internet vehicle intelligent high definition surveillance | |
| CN103986913A (en) | On-machine type fully-mechanized coal mining face video dynamic switching monitoring system | |
| CN108364479B (en) | System for electronic police intelligence light filling | |
| CN103105836A (en) | Visualized temperature monitoring device based on Internet of Things | |
| CN113965745A (en) | System and method for automatic high-speed monitoring of rail turnout | |
| CN109975675B (en) | Power transmission line insulator pollution degree monitoring equipment | |
| CN104252826A (en) | LED (Light Emitting Diode) display screen brightness monitoring method and device and LED display controller | |
| CN105764217A (en) | Infrared-thermal-imaging-based intelligent road illumination system and realization method thereof | |
| CN103281523B (en) | There is the telemetering terminal of video monitoring function and low power consumption characteristic | |
| CN209608780U (en) | A kind of overhead system automatic detecting safety monitoring system | |
| CN210199987U (en) | Intelligent traffic control system | |
| CN104065860A (en) | Onboard ultra-lightweight integrated high-definition video imaging and high-bandwidth transmission device | |
| CN115762145B (en) | Curve vision extension and real-time detection early warning system based on multi-robot cooperation | |
| CN101662670A (en) | Locomotive electronic intelligent monitoring device | |
| KR101196758B1 (en) | Traffic signal control apparatus having ethernet modem | |
| CN212727483U (en) | Stepless light modulation device for tunnel | |
| CN210578910U (en) | Monitoring system | |
| CN101127888A (en) | Onboard image collection device | |
| CN113172634A (en) | Control system of multifunctional intelligent inspection robot | |
| CN202879528U (en) | Universal notch detecting equipment for switch machine | |
| CN208874555U (en) | A kind of wireless telemechanical Intelligent management device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220121 |